CXA2581 Sony Corporation, CXA2581 Datasheet - Page 12

• Manufacturer Part Number: CXA2581
• Description: RF Signal Processor for CD Players
• Manufacturer: Sony Corporation

• VC Buffer
This outputs the VC ((1/2) V
The maximum output current is approximately ±3mA.
Use this voltage as the analog block VC voltage.
• RFDC
The signals input to the A, B, C and D pins are added, amplified and the RFDC signal is output. RW/ROM
switching and low frequency gain adjustment are possible.
VC
27
RFDC = Gain (A + B + C + D)
Low frequency gain ROM: 17.5dB
fc (Typ)
The gain can be adjusted by the external resistance connected between Pins 28 and 29.
The output voltage offset can be adjusted by controlling the Pin 30 voltage.
25
VC
ROM
C
D
A
B
RW
CC
6
7
8
9
RW:
ROM: 20MHz
RW:
) voltage.
V
CC
40k
40k
ROM
24k
15k
15k
15k
15k
2.4k
3.3k
29.5dB
5MHz
30
VC
10k
RW
96k
40k
ROM
RW
– 12 –
• DVC Buffer
This outputs the 1/2 DV
The maximum output current is approximately ±3mA.
Use this voltage as the digital block VC voltage.
The output DC voltage of each block is level shifted
using the DVC voltage as the reference.
RFDCI
DVC
2k
124
DVC
14
29
5.1k
25
28
CC
124
RFDCO
voltage.
DV
CC
40k
40k
CXA2581N